<template>
    <section class="main">
        <div class="crumbs">
            <el-breadcrumb separator="/">
                <el-breadcrumb-item><i class="el-icon-rank"></i> 拖拽组件</el-breadcrumb-item>
                <el-breadcrumb-item>拖拽排序</el-breadcrumb-item>
            </el-breadcrumb>
        </div>
        <div class="container">
            <div class="plugins-tips">
                Vue.Draggable：基于 Sortable.js 的 Vue 拖拽组件。 访问地址：<a
                    href="https://github.com/SortableJS/Vue.Draggable"
                    target="_blank"
                    >Vue.Draggable</a
                >
            </div>
            <div class="drag-box">
                <div class="drag-box-item">
                    <div class="item-title">todo</div>
                    <draggable v-model="todo" @remove="removeHandle" :options="dragOptions">
                        <transition-group tag="div" id="todo" class="item-ul">
                            <div v-for="item in todo" class="drag-list" :key="item.id">
                                {{ item.content }}
                            </div>
                        </transition-group>
                    </draggable>
                </div>
                <div class="drag-box-item">
                    <div class="item-title">doing</div>
                    <draggable v-model="doing" @remove="removeHandle" :options="dragOptions">
                        <transition-group tag="div" id="doing" class="item-ul">
                            <div v-for="item in doing" class="drag-list" :key="item.id">
                                {{ item.content }}
                            </div>
                        </transition-group>
                    </draggable>
                </div>
                <div class="drag-box-item">
                    <div class="item-title">done</div>
                    <draggable v-model="done" @remove="removeHandle" :options="dragOptions">
                        <transition-group tag="div" id="done" class="item-ul">
                            <div v-for="item in done" class="drag-list" :key="item.id">
                                {{ item.content }}
                            </div>
                        </transition-group>
                    </draggable>
                </div>
            </div>
        </div>
    </section>
</template>

<script>
import draggable from 'vuedraggable';
export default {
    name: 'draglist',
    data() {
        return {
            dragOptions: {
                animation: 120,
                scroll: true,
                group: 'sortlist',
                ghostClass: 'ghost-style'
            },
            todo: [
                {
                    id: 1,
                    content: '开发图表组件'
                },
                {
                    id: 2,
                    content: '开发拖拽组件'
                },
                {
                    id: 3,
                    content: '开发权限测试组件'
                }
            ],
            doing: [
                {
                    id: 1,
                    content: '开发登录注册页面'
                },
                {
                    id: 2,
                    content: '开发头部组件'
                },
                {
                    id: 3,
                    content: '开发表格相关组件'
                },
                {
                    id: 4,
                    content: '开发表单相关组件'
                }
            ],
            done: [
                {
                    id: 1,
                    content: '初始化项目，生成工程目录，完成相关配置'
                },
                {
                    id: 2,
                    content: '开发项目整体框架'
                }
            ]
        };
    },
    components: {
        draggable
    },
    methods: {
        removeHandle(event) {
            console.log(event);
            this.$message.success(`从 ${event.from.id} 移动到 ${event.to.id} `);
        }
    }
};
</script>

<style scoped>
.drag-box {
    display: flex;
    user-select: none;
}
.drag-box-item {
    flex: 1;
    max-width: 330px;
    min-width: 300px;
    background-color: #eff1f5;
    margin-right: 16px;
    border-radius: 6px;
    border: 1px #e1e4e8 solid;
}
.item-title {
    padding: 8px 8px 8px 12px;
    font-size: 14px;
    line-height: 1.5;
    color: #24292e;
    font-weight: 600;
}
.item-ul {
    padding: 0 8px 8px;
    height: 500px;
    overflow-y: scroll;
}
.item-ul::-webkit-scrollbar {
    width: 0;
}
.drag-list {
    border: 1px #e1e4e8 solid;
    padding: 10px;
    margin: 5px 0 10px;
    list-style: none;
    background-color: #fff;
    border-radius: 6px;
    cursor: pointer;
    -webkit-transition: border 0.3s ease-in;
    transition: border 0.3s ease-in;
}
.drag-list:hover {
    border: 1px solid #20a0ff;
}
.drag-title {
    font-weight: 400;
    line-height: 25px;
    margin: 10px 0;
    font-size: 22px;
    color: #1f2f3d;
}
.ghost-style {
    display: block;
    color: transparent;
    border-style: dashed;
}
</style>
